Factory work was not easy. first of all, it involved long hours. typical factory workers put in twelve-hour days, six days a week, and there were few holidays. moreover, most workers had to do the same simple tasks over and over each day. at the same time, they had to work fast to keep pace with the machines they tended. finally, factory work could be dangerous. fingers, hair, and clothing often got caught in the many gears and belts of machines, making accidents common. also, textile mills were filled with cotton dust, which damaged the lungs of the workers who breathed it in. which of these sentences provides key details?

The most detailed sentence in this text is "Fingers, hair, and clothing often got caught in the many gears and belts of machines, making accidents common".

Explanation:

Apart from summarizing the aim of the text (that factories were dangerous), this sentence explains the reason why this is stated. By mentioning actual material objects (like the fingers and hair), the author is creating a picture to imagine and understand that aim.

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.